Compound for preventing mortar from freezing



COATING UK me I IU.

. m iXso b m oM edit Mon GI'STAVE GARRELL, OF

man e BALTIMORE, MARYLAND.

COMPOUND FOR PREVENTING MORTAR FROM FREEZING.

SPECIFICATION forming part of Letters Patent No. 409,397, dated August 20, 1889.

Application filed December 22, 1888.

of sodium, and after pu vermug 1t nnx wit 1 1 one am a quarter bushel of coal-ashes,

which have also been n eviously puhm 'o1 g ;o u 1d fii i e." These ingredients are thor- I5 oughly mixed and raised to a temperature of 130 Fahrenheit. to expel all moisture. I then let the mass cool and add one and a quarter pound of salt ieter (nitrate of otash and three poun s 0 sn p 1a 9 o 1 w no 1 lat- 20 tel-ingredients are finely ground or pulverized before being added to the salt and coalashes. 'lhe coal-ashes I use mainly as an inert vehicle or diluent to keep the mass in a state of powder, and in some cases I may use 25 fine drv sand in the place of the coal-ashes.

This nuxlurepvhen prepared, is a dry powder,

Serial No. 294,377. (No specimens.)

and in using it about one part, by weight, of my compound is mixed with ten parts of ordinarv lime or cement mortar. In lime morfi I",

tar it is sprinmomogeneously mixed with the mortar as it is used; but in cement mortars it is (for more thorough a-lmixture) first intimately mixedwith the sand, and the cement and water are added afterward.

This compound I find will, when added to the mortar, as above described, effectually prevent it from freezing, and does not produce any deleterious influence upon the strength or set-tin g qualities of the mortar.

Having thus described my invention, what .I claim as new is- The composition herein described for preventing mortar from freezing, consisting of common salt, saltpcter, sulphate of iron, and coal-ashes, orits described equivalent, mixed in or about the proportions described.

GUSTAVE GARRELL.

'itnesses:

SOL-0N C. KEMON, WM. II. BATES. 

